juniorRecursion

Recursive vs. Iterative: Main Differences?

Updated Apr 28, 2026

Short answer

Recursion uses the call stack and can be cleaner; iteration uses loops and is often more memory-efficient.

Deep explanation

Recursion allows for elegant solutions to hierarchical problems. Recursion uses the call stack and can be cleaner; iteration uses loops and is often more memory-efficient. However, it requires careful handling of the stack to prevent memory exhaustion.

Real-world example

Traversing a family tree.

Common mistakes

  • Forgetting the base case, leading to infinite recursion.

Follow-up questions

  • What is the space complexity?

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